Sprayer device



Dec. 20, 1932'. .J. FITCH SPRAYER DEVICE Filed Sept. 6, 1930 INVENTOR .fafa n f'f/z Patented Dec. 20, 1932 y UNITED .STATES PATENT OFFICE* .mmv FITCH, or nIcmIoNn HILL; NnWYonK, AssIGNoa 'roA WILLIAM MARTIN VOGEL,

oFcLEN RIDGE, NEW JnnsrrifY i SPRAYERv DEVICE Application med september e, 1930;;- serial N0.'4syo,o55.

' This invention relates to insecticide sprayers or atomizers for use in destroying insect pests such as mosquitoes, flies, roaches, ants, and the like, and the invention has for its Vobject the provisiony of an improved construction of this character wherebyto obtain better, more effective and positive results than with the 'types of devices now in use for the purpose.

n yobject of the invention yis the provision in a Vdevice of the kindand for the purpose specified, of means for insuring'a ine and dense Vatomization oftheV destroying uidj or preparation. In carrying'out my invention, I

provide a construction having spray dischargev openings and two sets of air-blast openings, all in alignment, with an open space in1 free communication with the outside atmosphere between the two sets of air-blast 2n c openingsto permit the' discharge of excess air while insuring strong copious blasts for effectingthe desired atomization.

. Another-featu-re of theinvention resides in ,i the provision cfa; construction in which there '25 is* a qtulntitative `diierence between the cross sectional dimensions ofthe s 'ray openings, 'and theairblast openings,the Vrst-mentioned vbeinglar/gerz than the last-mentioned-in order i toprovidestrongblasts `of air for thoroughly breaking .up copiousv quantities of-liquid and thus obtain a fi-'neand densev distribution of 'inist orvapor from which the morey alert and hardy insects cannot escape.

'p Other aspects andobjects of the invention willappearhereinafter.Y Theinvention residesVinthe-improved sprayer device and in the` form, construction yand relative arrangement of its several parts, as will be herein- 'after-'more' fully set forth and subsequently incorporated in the'subjoined claims.

For a full-nnderstand-ing of the invention 'reference is tobe had tothe accompanying drawing-,which forms a material part lofthis application, andV in which VFigure 1 represents'a side elevational view 4of afsprayer device made in accordance with the vpresent invention;

gx 2 represents a front elevationalv view I thereof on a larger'scale, parts being broken "aWay';

ucylinder 10, said tube Fig. 3 is a vertical sectional view-taken on the line 3-3- of Fig. 2; l

`Fig.v 4 represents aV fragmentary detail section onA a Vstill larger scale, 'taken onfthe line of Fig. 2; and

Fig.- 5 `is a further enlarged detail section, taken on the line 5-5 of Fig. 4.

Referring in detail to the accompanying drawing, it will be seen that a piston rod l2'attached at its-frontend lto Y my improve t ments are represented as embodied 1n a spraythe piston and slidablyextending-:through the rear endl13- ofthe cylinder`,1said piston rod eXteri-orly of thefcyl-inderbeing provided with a' suitablehandle 14. The device'further includes a cylindrical fluid receptacle. 15 which isjattachedatliny transverse arrange` ment, as shown,"to the forward underneath portion `of the 'cylinderlO andsothat a portion of-its` curved Vperiphery will protrude a distance beyond the vertical yplane ofthe outwardly cuppedhead end 1710i the cylinderllO. The receptacle 15 is equipped with a filling-neck 18 wherein is Yscrew-threaded. a `closure plug 19fvvhich4 maybe removedy when the receptacle is to be replenishedl withl insecticide. l y

My'invention iny its preferred form of construction, as*l illustrated ,in the accompanying drawing, comprisesv asuction tube'QO sub- 'stantiallyof'rectangular form in cross. section so as to provide afront wall 21 and rear wall 22. This flat-formed tube extends from a point Within the receptacle 15 and preferably near the curved bottom thereof, to a position infront of the head end 17 of the passing through the Wallofthe receptacle at 23 and being firml secured in position vby means of solder 24er any suitable equivalent'means.

According to my invention, the top -end of the tube is entirely'closed as at V25. vBelow4 the closed topend 25, lthere' is provided transversely through the `frontv wall 21v` of the tube one or more spray-discharge openings 25, of which in the present instance three are shown. Through the back wall 22 are provided a corresponding number of air-blast openings 27 in horizontal alignment with the openings 26.v

In accordance with a feature of my invention', as best illustrated in Figs. 3, 4 and 5, the flat-formed tube is positioned so that a lateral space 2S is provided between its back wall 22 and the central vertical portion 29 of the head end 17. Through said central vertical portion 29 are provided a corresponding number o-f air-blast openings 30. My `invention is characterized by thefact that the three sets of openings 26, 27, and 30 are provided in horizontal axial alignment, and by the further fact that the spray-ditscharge openings 26 are of a larger size 1nY cross dimension than thetwo sets of air-blast openings 27 and 30. Preferably, as shown, all these openings are circular in form. For further maintaining the flat-formed tube rigidly in position, it is attached by means of solder 3l or otherwise to the head end 17, such attachment, it will be noted, being ata distance below the air-blast openings 30 so that the space 28, interveningV between' the' rear .wall 22 Vand verticalportion 29 of the head end, willgaiford a copious passage for the escape tofthe'outside atmosphere of eX- l cess air forcibly blown through the air-blast duced to a very ne mist or vapor.

openings 30. s f v In the'loperation' of the device, when the piston is forced toward the. head end 17, strong blasts of air will be ejected through the Vsets of aligned openings 30, 27 and 26, and, under the construction shown, excess air which fails to enter directly from the open.- ings 30 through the openings 27 is'gpermitted to escape laterally through the space28.V The air-blasts -passing ythrough the openings 27 cause the fluid in the receptacle to rise into the tube between the openings 27 and 26where the liquid is caught and discharged through the openings '526 in fine mist or vapor.

It is found'in'practice that the improved device of my invention practically doubles the spraying eect as compared-with the effect vobtained with the well-known sprayers, for

instance the type of sprayer n owin use for spraying the product known as Flit. With eachV forwardY movement of the piston, the ,quantity of. fluid drawn up and sprayed is greatly increased and at the same time the fluid is more eectively broken .up and re- Owing to the volume and density of the fine mist or vapor, the insects, even the more alert and hardy ones, are entrapped so that theyare destroyed before they are able to escape into atmosphere free of the insecticide.

have shownrin the present instance the preferred manner of arranging the sucytion tube and of forming the sets of openings,

in the present instance, ythe preferred embodiment thereof which has receptacle, a

it is to be understood that in the broad scope of my invention, these features may be modified, formed or spaced in any desired manner and still be within the scope of my invention.

It will nowbe apparent that ,I have devised a novel and highly effective sprayer device which embodies the features of advantage enumerated in the statement 'of the invention and the above description, and while I have, shown and described been found in practice to be highly eective indestroying insect pests, it is to be understood that the device is susceptible of modificationA in, various particularsk without departing fromv the spirit or the scopeof the inventionY or the scope of the appended claims.

.Iclaimz-f Y l j l. A sprayer of the kind described having means for producing blasts of air including a cylindrical body witha headl end provided with an aperture, a piston within the body movable toward said head end for thedischarge of the blasts of air through said aperture, a suction tube closed at its upperend disposed outside the body with an open-space open' to the atmosphere between itself and said head end, vthefront and rear walls `of said tuberespectively ibeing provided' with larger 'and smaller apertures inline with the aperture of the lhead end, andfafluid receptacle supported by the body exteriorlyvtherejof adjacent said head end, andin which the lower open end of vsaid'suction tube is Vdisposed. I 1 l 1 2. In a sprayer efthe kindl described, embodying means forlproducing blasts of air including'aV body with a head end provided with a plurality of vtransverse openings ,a

Y tube extending Afrom the receptacle toa position -acrossthe openings in said head` end and having its outer endrclosed, said tube having through its outer and inner walls a corresponding pluralityfof openings in alignment with the openings in *said head end and being arranged to provide an independent air space from said head end openings tothe outside atmosphere, the openings in the 'outer wall of said tube being of larger cross sectional dimensionthan the openings in its dinner wall and the openings in said .head en Y v 3. In a sprayer of the kind described, embodying an air pump having a pump headfor i: discharging blasts of air, a fluid receptacle combinedwith the pump, asuction tubecarried by the receptacle, its form being substantially rectangular in cross section with relatively wide front and rear walls so spacedz: as to provide for the flow between them ofva shallow relatively wide stream of fluid, one end of said tube being within the receptacle andthe opposite end thereof. being'outside the receptacle and closed, a portion of said tube adjacent its closed end being disposed latwise with respect to said head and with an independent air space between its rear Wall and said head, said front and rear walls of the tube opposite said head each being pro-` vided with a plurality of spra i openings in line with the air blasts discharglng from said head, and the spray openings in the front wall being larger than the spray openings in the rear wall.

4. In a sprayer of the kind described, embodying an air pump having a ump head for discharging blasts Vof air, a uid receptacle combined with the pump, a single suction tube carried by andprojecting from within the receptacle to a position in front of said head, its form in front of said head being substantially rectangular in cross section with relatively wide front and rear walls so spaced as to provide for the flow between them of a shallow relatively wide stream of Huid, the portion of the tube in front of said head being disposed flatwise with respect thereto and so as to provide an independent air space between the rear wall of the tube and said head, the front and rear walls of the tube each having therein a plurality of spray openings in line with the air blasts discharging from said head, the spray openings in the front wall being larger than the spray openings in the rear wall and an air tight closure for the outer free end of said tube.

In testimony that I claim the foregoing as my invention, I have signed my name hereto.

JOHN FITCH. 

